/**
 * Copyright 2010 MiSSO4J author(s)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.sjsso.app.servlet;

import static org.sjsso.Constant.SESSION_USER;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.sjsso.model.User;
import org.sjsso.util.PropertyUtil;

@SuppressWarnings("serial")
public class LogoutServlet extends HttpServlet {
	@Override
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession();
		User user = (User) session.getAttribute(SESSION_USER);
		try {
			URL url = new URL(PropertyUtil.getSSOServerUrl() + "logout");
			HttpURLConnection urlConnection = (HttpURLConnection) url
					.openConnection();
			urlConnection.setRequestProperty("Cookie", "JSESSIONID="
					+ user.getToken());
			BufferedReader in = new BufferedReader(new InputStreamReader(
					urlConnection.getInputStream()));
			in.readLine();
			session.invalidate();
		} catch (IOException ioe) {

		}
		response.sendRedirect("./");
	}
}